Diego measured the diameter and the circumference of several circular objects and recorded his measurements in the table. One of his measurements is inaccurate. Which measurement is it?

flying disc

Step-by-step explanation:

The formula of the circumference of circles is: diameter ×

I will find the circumference of each object to see if it matches the circumferences on the table.

Half dollar coin: 3 = 10 (rounded to nearest integer) CORRECT!

Flying disc: 23 = 72 (rounded to nearest integer) WRONG!

Jar lid: 8 = 25 (rounded to nearest integer) CORRECT!

Flower pot: 15 = 48 (rounded to nearest integer) CORRECT!

Based on the table, it was recorded that the circumference of the flying disc is 28, but we have calculated based on the diameter that it should be 72, so the measurement is inaccurate.

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1